Automatic ring plate valve



May,8,. 1934. J. H. H. voss AUTOMATIC RING- PLATE VALVE Filed March?. 1931 Patented Muay 8, 1934 l UNITED STATES PATENT lOFFlCEy AUTOMATIC RING PLATE VALVE Johann Heinrich Hermann Voss, White Plains,

Application March 7, 1931, Serial No. 520,764 3 Claims. (Cl. 277-60) My invention relates to automatic ring plate sembled parts may be clamped into the compresvalves, in which the moving valve plates consist sor-structure. Both casing sections are, or may oi thin, iiat and individual ring plates which be, simple castings, the section marked 5 formare held inclosed position over circular ports in ing the valve seat and the other, marked 6, be- 5 the valve seat by spring action and are opened ing the valve guard having vguide lugs, 7, which 6G by the iiowing med;um. l In the well known valves retain the valve plates in position. of this type safety of operation is endangered For a multi-po-rted valve of the kind here through the loosening and breaking of bolts, nuts, shown the seating part 5 is cast with four or clamps and other means holding the different `more concentrica. circular port slots 8 of proper l portions together; furthermore, these fastenings` width suited to the circular contour of the struc- 65 l reduce the effective passage area by taking up ture. The upper or inner ends of all these port much space within the structure of the valve, slots terminate ataco-mmon seat surface 9, which and, iinally the springs provided for closing pressurface is a plane and hence easily produced in sure soon become ineffective and are, due to their its finished form by ordinary tools. The Valve l shape, proportion and manner of mounting, sub'- guard section is formed with ow slots 10, in 70 jectto considerable wear and tear, either through similar concentrical arrangement to the port excessive bending stresses, resulting in frequent slots 8, but offset relatively thereto so that when breakages when made of apparently heavy mathe sections are united the Walls or ribs 11 beterial, or, due to high discharge temperatures, tweenthe said flow slots are disposed ina stagto early annealingwith consequent loss of elasgered position over Vthe port slots.

ticity, if made of lighter material. The faces 12 of these wall portions oi the valve A primary object of my invention is to provide guard section thus opposed to the port slots, form a ring plate valve to which the defects described the backing surfaces for the valve plates 2 and above are not attached, and which is particularare formed by turning away the`metal between ly adapted for use in pumps for conveying liqthe guide lugs forming a recess or chamber deep 80 uids and gases. To this end I provide a valve enough to accommodate the valve plate and afhousing assembly with peripheral rim and shoulford it an adequate lift. The peripheral ow slot der engagement requiring neither bolt nor other 10 is walled on the'outside by the rim 14 extedfastening within its circular structure, thus making beyond the seat surface 9 to engage the valve ing the entire valve surface available for the loseat 5 on the shoulder 15 far enough to locate 85 cation of effective passage area. I further prothree or more set screws l which hold the guard vde springs seating over two or more valve plates, section 6 in registry over the seat section 5. The housing them in self-Ventilating and self-cleanset screws'l being very small, actually only 1%" ing cavitlesyor recesses of the valve guard in to diameter, serve only to lock the valve secl such a manner that, due to their resulting large tions together when not in use. When the valve 90 size. they vibrate freely at high speed and in .is in actual operation it is 'clamped into the comlilgh temperatures without being subject to expressor assembly with powerful yokes pressing cesslve bending stress or annealing. s on the shoulders 4, securely holding the valve One illustrative embodiment of my invention sections together in operating condition, thus 40 is represented by way of example in the accomrelieving the set screws 1 from any -strain or 95 panying drawing, wherein: burden.

Fig. l is a central crosssectional elevation on It will be noted that assembled in this manner the line 1-1 of Figure 2, showing the valve seat, the two sections on their faces and within their valve guard, the ring plates and springs, and iiow slots are devoid of bolts, clamps, or other other portions. fastenings for holding them together, thus mak- 100 Fig. 2 is an inverted plan View of the valve ing the compressor safe-from damage or even deguard seen along the line 2-2 of Figure 1.. struction through breakage'of valve parts of this Fig. 3 shows a spring cavity or socket on an description, and, furthermore, the entire space enlarged scale. L within the contour of the valve is made available oil f The valve casing consists of two sections regfor the location of a large number of valve rings 105 istering on their periphery in a rim and shoulder so that the greatest, possible valve area is obengagement secured with three or more set tained, which is highly advantageous in any screws l, with the valve plates 2 and their springs form of plate valve, as'will be readily understood 3, housed between them and with appropriate by those skilledinthe arts. external surfaces or collars, 4, whereby the as- Spring cavitiesor sockets are conveniently produced in therib portions 11 of the valve guard 6 by drilling or milling into adjacent walls, so that the drill holes intersect the edges of the walls forming two opposed niches 13. Figure 3 shows on an enlarged scale that these niches snugly embrace the springs 3 inv their upper part and -being tapered at the lower end, nearest the abutment surfaces 12, allow them a slight side movement for adjustment of unequal lifting of the valve plates 2. As thus housed between two adjacent wall portions 11 the springs 3 extend and seat over two valve rings and, therefore, are

of such size and proportions that theyvibi'ate freeLv at high speed and in high temperatures without being subject to 'breakage through excessive bending stresses or to annealing through high discharge gas temperatures.

It is found,. moreover, that b'y providing spring cavities of the type described the springs are well ventilated and kept clean by the flow of the gas around and through them. The spring cavities are obviously capable of different arrangement as to size and location, they may be of oblong or square cross-section and maybe located around one or more of the guide lugs. The springs may y also be changed as to size, their cross-section may be of square or flat material etc., and it will be understood that various changes, substitutions and modifications may be made in size and arrangement of the parts without departing from th; invention, as specified in the following claims:

1. A ring plato valve comprising .united and guard sections loosely confining between them independent valve plates of light mass. the walls of adjoining guard sections being intersected by tapered cavities extending over two adjacent valve plates and serving to snugly house unattached closing springs, each resting against two crescent shaped bottom surfaces of each spring cavity and to. allow clearance for slight tilting of the springs. l

2. A ring plate valve comprising united seat and guard sections loosely confining between them independent plate valves of light mass, the walls of adjoining guard sections being intersected by tapered cavities serving to house closing springs, each resting against two crescent shaped bottom surfaces 'of each spring cavity and seating over adjacent valve plates and to allow clear? ance for slight tilting of the springs.

3. A ring plate valve comprising a casing section having a plane inner surface forming a valve seat, guard sections secured to said surface and having a central recess forming a ciry cular chamber, valve plates loosely conned in 'said circular. chamber, superposed seating springs each located in, and resting against two crescent shaped bottom surfaces of each ventilated cavity intersecting the walls ofadjoining guard sections and each spring seating over adjacent valve plates, and now slots formed in said guard section's to maintain active gas flow at all points of said valve seat surface.

JOHANN HEINRICH HERMANN VOSS.

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